Pneumatic musical instrument.



E. DE KLBST. PNEUMATIG MUSIGAL INSTRUMENT. APBILIUATION FILED MAY e. 1908. A

Qy Patented Mar. 15, 1910.

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PNEUMATIG MUSICAL INSTRUMENT.

. APPLICATION FILED MAY 6, 190B'. 952,253, Patented Ma?. 15,1910;

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E. DE KLEsT. PNEUMATIC MUSIGAL INSTRUMENT.

ABPLIGATION FILED MAY 8, 1908.

952,262. Patented Mar.15,1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

EUGENE DE KLEIST, OF NORTII TONAWANDA, NEW YORK, ASSIGNOR T0 THE RUDOLPH WURLITZER COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OI-IIO.

PNEUMATIC MUSICAL INSTRUMENT.

T o alt whom it may concern.'

Be it known that I, EUGENE DE KLEisT, a citizen of the United States, residing at North Tonawanda, in the count-y of Niagara and State of New York, have invented a new and useful Improvement in Pneumatic Musical Instruments, of which Athe following is a specification.

This invention relates to pneumatic musical instruments and more particularly to organs in which the valves which control the passage of the air to the pipe or other sound-producing parts are operated by a pneumatic action and tracker mechanism including` a reversing gear for automatically rewinding the music sheet.

The object of the invention is to improve the arrangement of the pressure and exhaust bellows and the driving mechanism of the same and the music and take-up rolls with a view of rendering the instrument compact in construction and facilitating access to said parts for readily repairing and renewing them.

In the accompanying drawings consisting of 3 sheets: Figure l is a sectional rear elevation of a pipe organ embodying the invention, the rear wall of the case being omitted. Fig. 2 is a transverse vertical section thereof in line 2-2, Fig. 1. Fig. 3 is a similar section in line EP3, Fig. l, showing the driving connections between the crank shaft and the suction and pressure bellows. Fig. t is a fragmentary sectional elevation, on an enlai-ged scale, of the driving gear of the music and take-up rolls, showing the means for stopping the instrument.

Similar letters of reference indicate corresponding parts throughout the several views.

A indicates the organ pipes and B the wind or pressure chest which may be of 0rdinary construction, b Fig. 2, indicating one of the individual ducts or channels thereof with which the respective organ pipe or pipes communicate; b1 the longitudinal compressed air chamber common to all of said ducts and with which each of the latter communicates by the usual port b2 controlled by a valve or pallet b3. These valves are opened by the customary motor pneumatics C through stickers c.

D indicates the pressure bellows, two of these beingpreferably employed, which rest on the bottom of the inclosing case, as

Specification of Letters Patent.

Application filed May 6, 1908.

Patented Mar. 15, 1910.

serial No. 431,083.

shown in Fig. 3. They are connected with the main pressure chamber b1 of the wind chest by a trunk D1.

The motor pneumatics C may be controlled by a pneumatic action and coperating tracker-mechanism of any suitable construction. In the preferred construction shown, E indicates the wind chest of this action arranged above the pressure bellows D and in rear of the groups of organ pipes. This chest contains the usual air chamber F which communicates with the atmosphere and the exhaust chamber Fl connected with a pair of main suction or exhaust bellows G.

indicates one of the individual exhaust and -llushing channels with which the corresponding motor pneumatic communicates by a duct f1; f2, f3 the double puppet valve controlling the ports which connect said channel with the air and exhaust chambers F, F1; f4 the diaphragm for operating said valve, and It the usual tubes leading from the diaphragm chambers to the ducts of the tracker board H.

The exhaust chamber F1 of the wind chest E is connected with the suction bellows G by tubes or conduits I, I1 and an interposed valve box or chamber I2 which latter is Conveniently located in one of the upper rear corners of the case, as shown. This box is provided in one of its walls with a fiushing port z' controlled by a swinging or other suitable valve 7' which is normally closed and which is opened when it is desired to Hush the wind chest for rendering the motor pneumatics inoperative and promptly stopping the playing of the instrument. In the construction shown in the drawings, this flushing valve is opened by a bell crank lever J, one arm of which is connected with the valve by a rod jl, while its other arm has a suitable handle for turning it.

The suction bellows Gr are preferably arranged in the upper rear portion of the case above the exhaust wind chest E, and these bellows and the pressure bellows D are operated from a common transverse crank shaft K suitably supported within the case at one side thereof. This shaft has a pair of differently-located cranks 7c, cl with which the movable boards of the suction bellows are connectedby pitmen Z, Z1, and a second pair of similarly-arranged cranks 7a2, 7c3 with which the movable boards of the pressure bellows D are connected by pitmen Z2, Zt, as shown in Figs. l and 3. rlhe driving shaft K extends through the rear wall of the case and is provided with a hand crank f, but it may obviously be driven by au electric or other suitable motor, if desired. This construction, while furnishing a simple and direct driving mechanism for both the suction and pressure bellows, permits a convenient and accessible arrangement of said bellows and a compact construction of the instrument. v

M is the usual music roll and Ml the takeup roll of the perforated music sheet. rlhe driving gear of these rolls may be of anv suitable or well-known reversible construction, the preferred mechanism shown in the drawings being of the mechanical type and including an upright driving shaft N carrying a friction wheel o which engages a friction disk o1 mounted on a horizontal shaft o from which the music and take up rolls are alternately driven b v suitable connections. The upright shaft N is driven from the crank shaft l( by a belt y) running around a pullev pl on the latter shaft, a pulley y on the upright shaft N and guide pulleys yf", p1 arranged above the crank shaft and supported in brackets projecting from the adjacent side wall of the case,

The horizontal shaft o2 is journaled in the frame of the tracker board and preferabl v slidable lengthwise in its bearings, so that the friction disk 0 can be moved into or out of gear with the friction wheel for driving or stopping` the music roll and take-up roll. Said friction disk is vieldingliy held against the friction wheel o b v a springl f] surrounding the shaft o: between a collar f/ thereof and the adjacent member of the tracker frame. rl`he shaft u: is moved in the opposite direction for withdrawing the friction disk from said wheel, by a lever ltpivoted to the tacker-frame atr and having its lower arm connected with the inner end of said shaft, while its upper arm is connected with the lower arm of the hand lever J b v a rod rl. B v this construction and ar rangement, upon swinging this lever in the proper direction, the driving mechanism of the music and take-up rolls is thrown out of gear with the crank shaft K at the same time that the wind chest E is flushed by the opening of the valve l claim as my invention l. In an instrument of the character described, the combination with the pressure and exhaust wind chests and the tracker mechanism including music and take-up rolls and gearing for rotating the same, a driving shaft journaled in the case of the instrument, pressure and exhaust bellows for said chests arranged above and below said shaft respectively, actuating connections between said upper and lower bellows and said driving shaft, and means for transmitting' motion from said driving shaft to the aetuatiiig gearing of the music and take-up rolls, substantially as set forth.

Q. In an instrument of the character described, the combination with the pressure and exhaust wind chests and Vthe tracker mechanism including music and take-up rolls and gearing for rotating the same having a driving pulley, a horizontal driving shaft arranged transversel)v in the case of the instrument and having a pluralit'lv of cranks and a pulley, pressure and exhaust bellows for said chests arranged above and below said shaft respectively, pitmen connecting the movable boards of said upper and lower bellows with the crank of said shaft, guide pulleys arranged above said crank shaft, and a belt ruiming around said guide pullevs and the pulleys of said shaft and said gearing, substantially as set forth.

Vlitness my hand this 9th day of April, 1908,

EUGENE DE KLB IS 

